Minimum One Bit Operations to Make Integers Zero - Video Solutions

HardDynamic ProgrammingBit ManipulationMemoization

Number of 1 Bits - Leetcode 191 - Python

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10 video solutions available

Minimum One Bit Operations to Make Integers Zero - Video Solution

Watch 10 video solutions for Minimum One Bit Operations to Make Integers Zero, a hard level problem involving Dynamic Programming, Bit Manipulation, Memoization. This walkthrough by NeetCode has 155,494 views views. Want to try solving it yourself? Practice on FleetCode or read the detailed text solution.

Problem Statement

Given an integer n, you must transform it into 0 using the following operations any number of times:

Change the rightmost (0^th) bit in the binary representation of n.
Change the i^th bit in the binary representation of n if the (i-1)^th bit is set to 1 and the (i-2)^th through 0^th bits are set to 0.

Return the minimum number of operations to transform n into 0.

Example 1:

Input: n = 3
Output: 2
Explanation: The binary representation of 3 is "11".
"11" -> "01" with the 2^nd operation since the 0^th bit is 1.
"01" -> "00" with the 1^st operation.

Example 2:

Input: n = 6
Output: 4
Explanation: The binary representation of 6 is "110".
"110" -> "010" with the 2^nd operation since the 1^st bit is 1 and 0^th through 0^th bits are 0.
"010" -> "011" with the 1^st operation.
"011" -> "001" with the 2^nd operation since the 0^th bit is 1.
"001" -> "000" with the 1^st operation.

Constraints:

0 <= n <= 10⁹

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